Surgeon fatally shot inside exam room, friend heartbroken

ViewIt's a shocking case you don't expect to hear about at a doctor's office.

Dr. Benjamin Mauck was inside an exam room on Tuesday at the Campbell Clinic in Collierville, Tennessee, when a patient shot and killed him, police said. 

Among the first to hear the tragic news was Bart Barker,  a close friend of Mauck, who...